Experimental and Numerical Study of Jet Controlled Compression Ignition on Combustion Phasing Control in Diesel Premixed Compression Ignition Systems

Qiang Zhang, Wuqiang Long, Jiangping Tian, Yicong Wang and Xiangyu Meng
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Qiang Zhang: Institute of Internal Combustion Engine, Dalian University of Technology, Dalian 116024, China
Wuqiang Long: Institute of Internal Combustion Engine, Dalian University of Technology, Dalian 116024, China
Jiangping Tian: Institute of Internal Combustion Engine, Dalian University of Technology, Dalian 116024, China
Yicong Wang: Institute of Internal Combustion Engine, Dalian University of Technology, Dalian 116024, China
Xiangyu Meng: Institute of Internal Combustion Engine, Dalian University of Technology, Dalian 116024, China

Energies, 2014, vol. 7, issue 7, 1-13

Abstract: In order to directly control the premixed combustion phasing, a Jet Controlled Compression Ignition (JCCI) for diesel premixed compression ignition systems is investigated. Experiments were conducted on a single cylinder natural aspirated diesel engine without EGR at 3000 rpm. Numerical models were validated by load sweep experiments at fixed spark timing. Detailed combustion characteristics were analyzed based on the BMEP of 2.18 bar. The simulation results showed that the high temperature jets of reacting active radical species issued from the ignition chamber played an important role on the onset of combustion in the JCCI system. The combustion of diesel pre-mixtures was initiated rapidly by the combustion products issued from the ignition chamber. Moreover, the flame propagation was not obvious, similar to that in Pre-mixed Charge Compression Ignition (PCCI). Consequently, spark timing sweep experiments were conducted. The results showed a good linear relationship between spark timing in the ignition chamber and CA10 and CA50, which indicated the ability for direct combustion phasing control in diesel PCCI. The NO x and soot emissions gradually changed with the decrease of spark advance angle. The maximum reduction of NO x and soot were both over 90%, and HC and CO emissions were increased.

Keywords: diesel combustion; jet controlled compression ignition; premixed combustion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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